Damper.



'.T. G. F. SGHAFER.

DAMPER. APPLICATION FILED APB. 4,1904.

Patntedoct. 2o, 1908.`

JOHN C. F. SCHAFER, OF MOUNT PULASKI, ILLINOIS.

DAMPER.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application filed April 4, 1904. Serial No. 201,620.

To all whom it may concern:

VBe it known that I, JOHN C. F. Sci-MEER, a citizen of the UnitedStates, residing at Mount Pulaski, in the county of Logan and State ofIllinois, have invented a new and useful Damper, of. which the followingis such a full, clear, and exact description will enable others skilledin the art to make and use my said invention.

My invention relates to dampers such as are commonly used in stove pipesand for similar purposes, and the object of my invention is to provide adamper that can be placed in a pipe more easily than any now made, andone that does not require the pipe to be perforated, and to accomplishthe same results as the dampers now in use.

With this end in view my invention consists of the novel features ofconstruction and combinations of parts shown in the annexed drawings towhich reference is hereby made, and hereinafter particularly de scribedand finally recited in the claims.

Referring to the drawings Figure 1 is a perspective view of the damperin position on a section of stove-pipe. Fig. 2 is a top plan of thedamper-plate detached. Fig. 8 is a perspective view of one of thebrackets supporting the damper-plate and Fig. 4 is a perspective view ofthe other bracket supportin the damper-plate.

Similar reference letters designate like parts in the several views.

The damper-plate A is substantially of the form shown and may be made ofcast iron o1l malleable iron or steel.

The brackets B and B', are of sheet iron or steel of the forms shown andbent as at L to fit on the upper end of a section of stovepipe and aremounted on the end of the pipe section in which the damper is to beplaced, and the axis a of the damper turns in holes Z in these brackets;a lever II is mounted to turn in a bearing 7L on the bracket B. Theupper end of the lever H passes through a slot K in an arm J on thedamper-plate, its lower end being bent to form a handle h forconvenience in turning the damper-plate. The next section of pipetelescopes a short distance over the section in which the dam per isplaced, and it will be found that the brackets do not interfere muchwith this.

In Fig. 2,A is the damper-plate, and a. a. the axis on which it turns:b. are enlargements or heads on the ends of the axis a. a.

J is an arm on the damperplate, and K is a slot in this arm shown inFig. l

The axis of the plate A has at its end, heads b, which prevent the axisfrom slipping out o-f the holes in the brackets. The axis a, turns inthe holes l of the hangers B and B. Slits e are cut in the brackets andextend down into the holes d, and permit enlargement of the holes sothat the heads .7) may be inserted and the edges of the slits are thenpressed together so as to prevent the heads from slipping out of theholes in the brackets.

F. F. are narrow strips cut from the brackets except at their upper endsand when the next section of pipe is in position, the free ends areturned up, to assist in holding the brackets firmly in position. Thelower end of the bracket B may be enlarged, and its lower edge notchedand bearing on the lever H, to assist in holding it at any point. Inboth brackets the parts as at m and n are brought closely together, thatthey may assist in holding the brackets firmly in the pipe. The bracketsare separately movable on the upper end of the pipe section on whichthey are supported, and may withoutl special fitting of the parts beeasily and quickly placed on the pipe-section to bring the holes in thebrackets into line with the axis of the damper-plate in such positionthat the damper-plate will be properly centered with respect to thepipe-section.

In use the axis of the damperplate is put in the enlarged holes in thetwo brackets, and the openings are then reduced that the axis may notpull out of these brackets, as stated. The brackets are then placed overthe upper end of the section of. pipe on opposite sides, so that thedamper plate can be turned freely. The next section of pipe is thenplaced on the said section the usual distance: the free ends of thestrips F are turned up to hold the brackets firmly in the pipe. Thedamper plate can now be turned by the handle z, which is on the outsideof the pipe, and the damper used. for the purposes intended.

Having described my invention, what I claim as new and desire to secureby Letters Patent is,

l. The combination of a pipe section adapted to fit within acomplemental pipe section, brackets fitting on the end of the firstnamed pipe section and having inside members provided with holes, andone of said brackets having an outside member adapted to support alever, a damper plate having headed trunnions fitting in the holes ofthe bracket members inside of the pipe section, and a lever mounted onthe outside member of one of the brackets and'connected to oscillate thedamper plate.

2. The combination of a pipe sect-ion adapted to fit within acomplemental pipe section, brackets adapted to be supported upon saidfirst named pipe-section and having members adapted to support thebrackets on the first named pipe section and membersl adapted to be bentto lie against the oomplemental pipe section, an oscillative damperplate mounted on the brackets, and a lever supported on one of thebrackets and connected to oscillate the damper plate.

3. The combination of a pipe section adapted to telescope within acomplemental pipe section, separately movable bracket-s adapted to fitover the end of the iirst named pipe section also adapted to fit aroundthe end of and lie against the wall of said complemental pipe-section, adamper plate supported within the iirst named pipe section upon saidbrackets, and a lever adapted 12o lie between said iirst named pipesection and the complemental pipe section and connected to operate thedamper plate.

4L. A damper attachable to an outer pipesection and a complemental innerpipe-seetion; comprising separate brackets adapted to support anoscillative damper-plate and adapted to engage the walls and ends ofboth of said pipe-sections to prevent movement of said brackets uponeither of said pipe-sections, a damper-plate oscillative on saidbrackets, and a lever mounted on one ot said brackets and adapted to liebetween the telescoping pipe-sections and connected to oscillate saiddamper-plate.

5. A damper attachable to an outer pipesection and a complemental innerpipe-section; comprising separate brackets adapted to tit on the end ofthe inner pipe-section, said brackets having an inner member adapted tosupport a damper-plate and outer members adapted to lie between thewalls of the telescoping pipe -sections, a damper -plate oscillative onthe inner members of said brackets, and a lever mounted on the outermember of one of said brackets and connected to oscillate saiddamper-plate.

G. The combination of a bent bracket having two members and adapted tofit on the end of a section of pipe, one member of the bracket beingprovided with a bearing for said member being bent, a damper-operatinggage with the bent end of said member, and a damper adapted to beoperated by said lever.

7. The combination of bent brackets adapted to tit on the end of apipe-section and having bearings adapted to support a damperplate, adamper-plate adapted to oscillate in the bearings of the brackets and alever mounted on one of the brackets and having a. lateral extensionadapted to operate the damper-plate.

In witness whereof I have hereunto subscribed my name, at Mount this 22day of March, 1904.

JOHN' C. F. SCHAFER.

7itnesses C. E. MUELLER, WM. B. JENNER.

a. damper-operating lever, and the end of ti Pulaski, Illinois, i

lever provided with a handle adapted to en-

